Typewriter device



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Patented dan. 2, i923.

TYPEWRITER DEVICE.

Application le March 26, 1921. Serial No. 455,757.

To 07X whom may concern.'

Be it known that l, EnwrN M. COOPER, a citizen olli the llnited States,r and resident of the rci y and county of San Francisco, State of aliicrnia, have invented new and useful linprovements in illypewriterDevices, et which the following is a specification.

ltr/ly invention has for its object a device which be attached to a standard form ot typewriter' for the purpose of operating the spacing mechanism by a lateral movement o'i the thumbnv and this l accomplish by providing a bell crank attached to a pivot to the stationary part of the typewriter :frame and having one of its arms armed as a finger member and standing substantially vert-ical and the other arm standing in substantially a horizontal position and connected to or contacting with the vertically operable spacing bar, or parts with which the spacing bar is attached7 to operate the spacing mechanism of the type` writer.

By referring to the accompanying drawings my invention will be made clear.

Fig. l a :front view of a portion ot a typewriter showing particularly the spacf x-ar with my invention applied thereto, remaining portions oi? the typewriter r well known and not shown.

e'. 2 is a plan view of certain parts of r 3 is a cross section through the spacing bar and a portion of the stationary trame of the typewriter of F ig. l on the line lll-lll thereof, and showing my device in perspective and with the hub portions in section to show the manner ot pivoting.

Fig. l is similar to Fig. 3 illustrating a variation in the construction of the device wherein the pivot for the bell crank is carried upon a separate member, which latter may be clamped in any desired position on the front stationary frame ot the typewriter.

Fig. 5 is a rear view of the parts ot Fig. il.

6 shows a typewriter device affixed thereto.

Throughout the figures similar numerals refer to identical parts.

A portion of the stationary frame of the typewriter machine is shown by the numerals l, l, within which is the well known .spacing` bar 2, 2, adapted to actuate the spacing mechanism of the typewriter in the wellknown At 3 is shown the finger member and at 4 an operating member ot my bell crank whiclrare joined together at the hub o and operate freely about the pivot G.

lil/here the parts are fitted to the typewriter in the factory ll prefer to extend the arm l below the bar2 and connect it thereto by the pivot 7, operatingin a slot in the arm 4 or it may be connected by` a link.

YJhere the device is separable from the typewriter and made as an article of manurfacture the form indicated in Figs. land 5 will be preferable, in which case the pivot 6 .is formed with the U member `8, the latter adaptedto straddle the stationary part l direct connection therewith as at` l2 or I through the instrumentality of the U piece 8.

Referringparticularly to Fig. l it will be noted that the spacing was heretofore accomplished upon the typewriter by the vertical downward movement of the spacing bar 9. in the direction of the arrow 185, whereas with my invention the lateral movement of the inger member 3, as by the thumb, in the direction of the arrow 14, will now cause the depression of the said spacing bar and the operation of spacing.

I claim:

l. The combination with the :trame and spacer bar of a typewriter, of an attachment for operating the spacer bar, comprising a clamp removably mounted on the trame7 and a lever pivoted on said clamp and having an arm'adapted to be engaged by the hand of the operator and an arm arranged to operate the spacer bar.

2. The combination with the front bar of the frame `01": and the spacer bar of a typewriter, of an attachment tor operating the spacer bar comprising a clamp removably.

mounted on said iront bar, and a lever pivoted on the clamp between said frontbar and said spacer bar and having an arm adapted to be engaged by the hand of theL operator, and an arm arranged to operate the spacer bar.

3. An attachment. for typewritersy com- 5 prsng, clamp having a leg adapted t0 removably embrace the inner face of the front bar of the iframe o a typewriter, a lever pvoted on said leg of theelanp sees to be disposed between said front bar 01"' the frame and the Spacer bar of the typewriter when the damp is in position, said leveryhavng an arm adapted te be engaged by the hand of the oae'retor and an arm ada. ted to o erie he spacer bar.

nerr/1N M. Coenen.' 

